In an MPLS VPN network, which of the following configurations is NOT a necessary condition for
"PE devices and CE devices to exchange routes via BGP"?

• A.Configure BGP neighbors on the D.P device to pass routes between PE and CE.
• B.The BGP neighbor relationship between the PE device and the CE device has been configured and established successfully.
• C.The PE device imports the routes advertised by the CE device into the BGP VPNv4 address family.
• D.Configure BGP VPNv4 address family on the PE device.

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In Huawei's WAN bandwidth optimization solution, for "real-time collaboration tool traffic transmitted across regions (such as Teams, Zoom)," which of the following technologies can
"ensure the smoothness of real-time voice/video and reduce lag"?

• A.Limit real-time bandwidth and prioritize file transfer.
• B.Application protocol-based acceleration technologies (such as optimizing the Real-time Transport Protocol, RTP)
• C.Transmit traffic directly without any optimization.
• D.All real-time traffic is relayed through headquarters, increasing latency.

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In the deployment of the OSPF protocol in a wide area network, what is the core function of the ABR (Area Border Router)?

• A.Forward routes only within a single OSPF area, not across areas.
• B.Disable OSPF and use static routes to connect different areas.
• C.Only external AS routes (Type 5 LSA) are transmitted; inter-area routes are not transmitted.
• D.Connect different OSPF areas and pass inter-area routes (such as Type 3 LSA).

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In troubleshooting MPLS VPN networks, if you need to "view detailed information about BGP VPNv4 neighbors on the PE device (such as neighbor status and establishment time)," which of the following commands should you use?

• A.display bgp vpnv4 all routes
• B.display bgp vpnv4 peer [neighbor IP] verbose
• C.display ip routing-table vpn -instance
• D.display mpls lsp

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In Huawei's WAN solution, regarding the issue of "blurry and stuttering video conferencing across regions," which of the following troubleshooting steps should be performed first?

• A.Check if public internet services are consuming excessive bandwidth.
• B.Check if the video conferencing traffic is configured with the DSCP EF flag (high priority).
• C.Check if the DNS configuration of the CE device is correct.
• D.Check if the memory usage of the branch equipment is too high.

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